2-Aminopyridine → HCID 53232452, compound

HRID 2189873Notes

Reaction equation

Cl[C:2]1[N:9]=[C:8]([NH:10][C:11]2[CH:15]=[C:14]([CH3:16])[NH:13][N:12]=2)[C:7]([Cl:17])=[CH:6][C:3]=1[C:4]#[N:5].[F:18][C:19]1[CH:20]=[CH:21][C:22]([C@@H:25]([NH2:27])[CH3:26])=[N:23][CH:24]=1.CCN(C(C)C)C(C)C.N1C=CC=CC=1N>C(O)CCC>[Cl:17][C:7]1[C:8]([NH:10][C:11]2[CH:15]=[C:14]([CH3:16])[NH:13][N:12]=2)=[N:9][C:2]([NH:27][C@H:25]([C:22]2[CH:21]=[CH:20][C:19]([F:18])=[CH:24][N:23]=2)[CH3:26])=[C:3]([CH:6]=1)[C:4]#[N:5]

Participants

Conditions

Temperature: 150 °C

Procedure

To a 10-ml microwave vessel was added, 2,5-dichloro-6-[(5-methyl-1H-pyrazol-3-yl)amino]nicotinonitrile (Method 60, 8 mmol), [(1S)-1-(5-fluoropyridin-2-yl)ethyl]amine (Method 33, 8 mmol, 97 wt % solution in dioxane), DIEA (0.3 ml, 1.66 mmol), and n-butanol (4 ml). The vessel was then sealed and subjected to microwave heating at 150° C. for 3 hours. After 3 hours, more 2-pyridyl amine (100 mg, 0.69 mmol) was added. The resulting mixture was purified by silica gel chromatography (Biotage Horizon System) using an isocratic system of 15:0.5:0.5% of DCM/EtOAc/MeOH to give 312 mg of the title compound. 1H NMR: 12.04 (br s, 1H), 8.41-8.63 (m, 2H), 7.84 (s, 1H), 7.56-7.71 (m, 1H), 7.40 (dd, J=8.67, 4.14 Hz, 1H), 7.28 (s, 1H), 5.86 (s, 1H), 5.06-5.25 (m, 1H), 2.17 (s, 3H), 1.51 (d, J=7.54 Hz, 3H). MS: Calcd.: 371/373. Found: [M+H]+ 372/374.

Workup

additionTo a 10-ml microwave vessel was added
customThe vessel was then sealed
customThe resulting mixture was purified by silica gel chromatography (Biotage Horizon System)

Sources & evidence

ORD record: ord-25e4340b28524ece85fd5f6e4ee371ba
Source dataset: uspto-grants-2012_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08324252B2

Reaction notes

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